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Electronics Quiz

Authored by Mr Muthusamy HOD – ECE

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Professional Development

Used 2+ times

Electronics Quiz
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23 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which voltage regulator provides a constant 5V output?

7809

7812

7805

7905

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Breadboards are mainly used for:

Permanent connections

Temporary circuit testing

High voltage wiring

Power transmission

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we use voltage regulators?

To amplify current

To stabilize voltage

To increase frequency

To reduce resistance

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The first band in a 4-band resistor colour code represents:

Multiplier

Tolerance

First digit

Last digit

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The equivalent resistance of 220Ω and 330Ω in parallel is approximately:

550Ω

130Ω

88Ω

200Ω

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A touch sensor detects:

Human touch/contact

Magnetic field

Heat

Sound waves

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Combining IR and LDR to trigger a buzzer requires:

Two microcontrollers

A logic circuit or Arduino

An op-amp only

A transformer

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